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High-resolution optoacoustic mesoscopy with a 24 MHz multidetector translate-rotate scanner.

J. Biomed. Opt. 18:106005 (2013)
Verlagsversion DOI
Open Access Gold
Optoacoustic (photoacoustic) mesoscopy aims at high-resolution optical imaging of anatomical, functional, and cellular parameters at depths that go well beyond those of optical-resolution optical or optoacoustic microscopy i.e., reaching several millimeters in depth. The approach utilizes tomography to achieve ultrasonic-diffraction resolution and operates at high-ultrasound frequencies (20 to 200 MHz) induced by few-nanosecond laser pulse excitation of tissues. We investigated here the performance of optoacoustic mesoscopy implemented at 24 MHz center frequency and its ability to resolve optical absorption contrast in the mouse kidney ex vivo. The developed system achieved better than 30 μm in-plane resolution and 110 μm elevation resolution over a cylindrical volume of 9-mm diameter and 9-mm height. This unprecedented combination of resolution and depth was achieved by implementing a translate-rotate detection geometry and by tomographic reconstruction. The approach yielded images of optically absorbing structures with a level of detail never-before visualized in an intact mouse kidney and allows insights into their unperturbed architecture. We discuss the ability to offer multispectral acquisitions and enable in vivo imaging.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Optoacoustic ; Mesoscopic Scale ; Linear Array ; Computed Tomography ; High-frequency Ultrasound; Ultrasound Array ; 1-3 Composite ; Linear-array ; In-vivo ; Tomography ; Reconstruction ; Performance ; Microscopy ; Inversion
Sprache englisch
Veröffentlichungsjahr 2013
HGF-Berichtsjahr 2013
ISSN (print) / ISBN 1083-3668
e-ISSN 1560-2281
Quellenangaben Band: 18, Heft: 10, Seiten: , Artikelnummer: 106005 Supplement: ,
Verlag SPIE
Begutachtungsstatus Peer reviewed
POF Topic(s) 30205 - Bioengineering and Digital Health
Forschungsfeld(er) Enabling and Novel Technologies
PSP-Element(e) G-505500-001
Scopus ID 84886790019
Erfassungsdatum 2013-10-14